Connecting rod assembly for radial engines



J. SCHUBERT May 30, 1939.

CONNECTING ROD ASSEMBLY FOR RADIAL ENGINES Filed June 8, 1938 2 Sheets-Sheet l May 30, 1939. J. SCHUBER T I 2,160,444

CONNECTING ROD ASSEMBLY FOR RADIAL ENGINES Filed June 8, 1938 2 Sheets-Sheet 2 Patented May 30, 1939 CONNECTING ROD ASSEMBLY FOR RADIAL ENGINES Julius Schubert, Sunnyside, N. Y.

Application June 8, 1938, Serial No. 212,574

2 Claims.

This invention relates to a true motion connecting rod assembly for radial internal combustion engines and, among other objects, aims to provide a greatly improved connecting rod hub mounting for the connecting rods and link and lever connections between the hub and the connecting rods arranged to maintain the hub in a definite or predetermined angular position relative to the various cylinders during the rotation of the crank shaft. Another aim is to provide a simple connecting rod assembly having a true motion permitting the development of,

unlimited horsepower in a single or multiple row radial engines.

Other objects of the invention will appear in the specification, when considered in connection with the accompanying drawings, wherein:

Fig. 1 is a front view, partly in section, showing the preferred form of connecting rod assem- 0 bly applied to a radial engine;

Fig. 2 is a vertical view, partly in section, showing two of the connecting rods applied to a crank pin;

Fig. 3 is a fragmentary sectional view taken on the line 33 of Fig. 1.

Referring to the drawings, the engine is shown as having one row of radial cylinders ID of which there may be any desired number. The engine has the usual crankshaft H with a crank pin l2. The pistons l3 havethe usual articulating or connecting rods l4 each connected to a bearing pin [5 in a hub member IS on the crank pin l2. The hub member I6 is shown as being split or made in two parts bolted together on the crank pin I2. To keep the hub in the same relative angular position during the rotation of the crank, separate pairs of links ll and I8 are shown as being pivotally connected at their outer ends to opposite articulating rods near the hub. These links are connected at their 5 other ends to the arms of a bell-crank l9 which is pivoted at the junction of the arms to the hub approximately from the articulating rods. The arrangement is such that as the crank turns, the links act to prevent the hub from ro- 10 tating on the crank pin, causing it to remain in the same relative angular position, the bellcrank compensating for the angular displacement or movements of of theconnecting rods.

I claim:

the inner end portions position.

2. A connecting rod assembly for radial engines comprising, in combination, a hub carrying a plurality of articulating rods; a bell-crank member pivoted at the junction of its arms to the hub; and a pair of links pivotally connected to 30 the respective arms of the bell-crank and to separate articulating rods to maintain the hub always in substantially the same angular position.

JULIUS SCHUTBERT. 

